V24A36M400BN3: 24 V to 36 V, 400 W Sourcing and Verification
Table of Contents
- What V24A36M400BN3 Defines
- Electrical and Thermal Conditions That Change the 400 W Rating
- Package Suffix, Documentation, and Substitution Control
- Incoming Inspection and Mixed BOM Verification
- Documenting the V24A36M400BN3 Requirement Before You Buy
- FAQ
- Is V24A36M400BN3 interchangeable with other 36 V 400 W Vicor suffixes?
- What input voltage should the design support?
- Can the module deliver 400 W continuously?
- What documentation should I request for a military-grade order?
- How do I confirm the BN3 package is correct?
The V24A36M400BN3 is a Vicor Maxi-format DC-DC converter configured for a nominal 24 V input and a nominal 36 V output at a 400 W power rating. The part number controls more than the electrical set point: it also selects the package style, temperature grade, and the suffix options that affect mounting, pins, and compliance. For defense and sustained industrial programs, the procurement question is not whether the part exists. It is whether the exact BN3 build matches the mechanical and environmental requirements, and whether the lot arrives with enough proof to move into a controlled inventory. This guide covers the part-number decode, the conditions that limit the 400 W rating, and the documentation checks that should accompany a hi-rel order.
What V24A36M400BN3 Defines
The part number can be read as a selection chain. V24 identifies the nominal 24 V input. 36 identifies the nominal 36 V output. 400 is the rated output power at the manufacturer-defined operating conditions. At the nominal output voltage, 400 W corresponds to about 11.1 A of output current, obtained from the basic relationship of power divided by voltage.
That current value is a planning figure, not an unconditional operating point. The module rating depends on the input voltage, baseplate temperature, airflow or conduction cooling, and the required output regulation. The BN3 suffix and the temperature grade complete the mechanical and environmental definition, so procurement should treat those suffix characters as controlled configuration items.
| Part number section | Marking in V24A36M400BN3 | What it defines | Procurement check |
|---|---|---|---|
| Input voltage | V24 | 24 V nominal input, expanded source range per manufacturer documentation | Confirm source voltage range, transients, and low-line hold-up. |
| Output voltage | 36 | 36 V nominal output | Confirm regulation band and allowable trim range. |
| Output power | 400 | 400 W rated output under specified conditions | Convert to load current and derate for thermal and line limits. |
| Module format | A | Maxi-format module family | Lock the mechanical outline and mounting envelope. |
| Temperature grade | M | Manufacturer temperature grade indicated by this position | Obtain the exact temperature limits for the M suffix. |
| Package and pins | BN3 | Package, pin, baseplate, and finish variation | Check the official mechanical drawing and RoHS status. |
Electrical and Thermal Conditions That Change the 400 W Rating
The 400 W rating should be treated as a rated ceiling rather than a promise that the module can support any 36 V load at any temperature. The output current that a design can draw is determined by the input line, the external cooling, and the altitude or enclosure conditions. When the input sags toward the low end of the supported range, the converter must draw more input current, and internal losses can increase. When baseplate temperature rises, the available output power is derated. When airflow is restricted, the same baseplate temperature is reached at a lower load.
A useful calculation is to start with the maximum continuous output current at the nominal rail: 400 W divided by 36 V equals roughly 11.1 A. Then reduce that figure according to the specific application. A load that runs at 11.1 A cold may not be safe at high baseplate temperature. A load that runs at 9 A may be acceptable across a wider thermal range. The exact derating curve must be taken from the manufacturer documentation for the ordered part, not inferred from another suffix.
| Stress condition | What it influences | Action before design lock |
|---|---|---|
| Low input voltage | Higher input current and greater internal loss | Confirm worst-case source voltage and duration. |
| Baseplate temperature | Output power derating | Define the thermal interface and maximum temperature. |
| Airflow or conduction path | Cooling and power capability | Model enclosure airflow or heat-sinking. |
| Altitude | Convection cooling and voltage withstand margins | Apply the program altitude requirement. |
| Load dynamics | Regulation, transient response, and stability | Validate load steps, capacitance, and remote sensing if used. |
Package Suffix, Documentation, and Substitution Control
The BN3 portion of V24A36M400BN3 is not decorative. Vicor uses suffix characters to control pin length, baseplate configuration, and lead-free or tin-lead options. The best practice is to request the current mechanical drawing and the exact part-number decode from the source before the purchase order is released. A substitution that preserves the electrical rating but changes the package suffix may be unacceptable because the mounting surface, pin fit, thermal path, or solder process no longer matches the approved design.
For military or high-reliability applications, documentation should be defined as a requirement before shipment, not after the material arrives. Typical records to request include a Certificate of Conformance, lot and date code information, traceability back to the manufacturer or authorized chain, moisture or ESD packaging evidence, and any test or screening reports required by the program. The purchase order should state whether the parts must be new, from a controlled date code range, or produced under a specific lead finish.
Incoming Inspection and Mixed BOM Verification
When V24A36M400BN3 is part of a larger program BOM, use the same incoming inspection method for the adjacent FPGA, logic, and signal-chain devices. Match each device to the approved part number, record lot and date codes, and hold any line item whose suffix or packaging differs from the purchase order until engineering reviews the deviation.
Examples of other high-reliability device categories that use the same verification record follow.
Documenting the V24A36M400BN3 Requirement Before You Buy
A reliable quote for this module starts with a complete line-item description, not only the part number. Send the exact part number and suffix, the required temperature grade, the target quantity and date code preference, and any CofC, screening, or packaging requirements. That lets the supplier confirm the controlled build rather than offering a generic electrical equivalent.
To request a quote or a traceability review for V24A36M400BN3, contact Sparkle Electronics at xuansc2144@gmail.com.
FAQ
Is V24A36M400BN3 interchangeable with other 36 V 400 W Vicor suffixes?
Not automatically. The electrical rail may be the same, but the suffix can change pin length, baseplate, finish, or lead-free status. Treat any replacement as a mechanical and process change, not a routine drop-in.
What input voltage should the design support?
The part is built around a nominal 24 V input, but the exact source voltage range and behavior at low line must be confirmed from the manufacturer documentation for the ordered suffix. The design should also include source transients and hold-up time.
Can the module deliver 400 W continuously?
At nominal output, 400 W corresponds to about 11.1 A, but continuous operation depends on cooling, baseplate temperature, input voltage, and altitude. The 400 W rating is a rated operating point with derating under higher stress.
What documentation should I request for a military-grade order?
Request a Certificate of Conformance, lot and date code records, traceability to the manufacturer or authorized chain, ESD and moisture packaging evidence, and any required screening or test reports. Put these requirements on the purchase order before shipment.
How do I confirm the BN3 package is correct?
Obtain the official mechanical drawing and compare pin configuration, baseplate, package dimensions, and RoHS or lead-finish data against the approved design. Do not substitute an electrically similar suffix without engineering review.
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